{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53047", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:18:43.828Z", "datePublished": "2025-05-02T15:55:04.071Z", "dateUpdated": "2026-08-05T09:12:32.691Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:12:32.691Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: amdtee: fix race condition in amdtee_open_session\n\nThere is a potential race condition in amdtee_open_session that may\nlead to use-after-free. For instance, in amdtee_open_session() after\nsess->sess_mask is set, and before setting:\n\n sess->session_info[i] = session_info;\n\nif amdtee_close_session() closes this same session, then 'sess' data\nstructure will be released, causing kernel panic when 'sess' is\naccessed within amdtee_open_session().\n\nThe solution is to set the bit sess->sess_mask as the last step in\namdtee_open_session()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached via local TEE ioctls (TEE_IOC_OPEN_SESSION / TEE_IOC_CLOSE_SESSION) on /dev/tee*, not via network packet processing or adjacent-link protocols.\nAC:L - The attacker drives both sides of the race with concurrent open/close ioctls on the same context; after one successful open the ta_handle is known and further session IDs are computable, and the window spans the slow TEE firmware open call.\nPR:L - tee_open/ioctl paths have no capability checks; access depends on /dev/tee* permissions, which are commonly 0660 root:tee and usable by unprivileged processes in the tee group (or equivalent Android/embedded TEE clients).\nUI:N - Exploitation requires only the attacker's own open/close ioctl sequence; no separate victim action is needed.\nS:U - This is a host-kernel use-after-free enabling privilege escalation within the same OS security authority, not a VM escape or IOMMU/sandbox boundary cross.\nC:H - The race frees struct amdtee_session while open_session still accesses it; that UAF can be turned into an arbitrary kernel read via heap reuse.\nI:H - The same UAF of the session object enables heap spraying and write/control-flow primitives for integrity compromise or code execution.\nA:H - The commit documents kernel panic on the freed sess access, and UAFs reliably cause oops/panic even when not fully exploited." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/tee/amdtee/core.c" ], "versions": [ { "version": "757cc3e9ff1d72d014096399d6e2bf03974d9da1", "lessThan": "f632a90f8e39db39b322107b9a8d438b826a7f4f", "status": "affected", "versionType": "git" }, { "version": "757cc3e9ff1d72d014096399d6e2bf03974d9da1", "lessThan": "02b296978a2137d7128151c542e84dc96400bc00", "status": "affected", "versionType": "git" }, { "version": "757cc3e9ff1d72d014096399d6e2bf03974d9da1", "lessThan": "a63cce9393e4e7dbc5af82dc87e68cb321cb1a78", "status": "affected", "versionType": "git" }, { "version": "757cc3e9ff1d72d014096399d6e2bf03974d9da1", "lessThan": "b3ef9e6fe09f1a132af28c623edcf4d4f39d9f35", "status": "affected", "versionType": "git" }, { "version": "757cc3e9ff1d72d014096399d6e2bf03974d9da1", "lessThan": "f8502fba45bd30e1a6a354d9d898bc99d1a11e6d", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/tee/amdtee/core.c" ], "versions": [ { "version": "5.6", "status": "affected" }, { "version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.177", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.105", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.22", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.9", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.10.177" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.105" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.22" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.2.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f632a90f8e39db39b322107b9a8d438b826a7f4f" }, { "url": "https://git.kernel.org/stable/c/02b296978a2137d7128151c542e84dc96400bc00" }, { "url": "https://git.kernel.org/stable/c/a63cce9393e4e7dbc5af82dc87e68cb321cb1a78" }, { "url": "https://git.kernel.org/stable/c/b3ef9e6fe09f1a132af28c623edcf4d4f39d9f35" }, { "url": "https://git.kernel.org/stable/c/f8502fba45bd30e1a6a354d9d898bc99d1a11e6d" } ], "title": "tee: amdtee: fix race condition in amdtee_open_session", "x_generator": { "engine": "bippy-1.2.0" } } } }